networkx 学习

import networkx as nx
import pylab 
import numpy as np
#自定义网络
row=np.array([0,0,0,1,2,3,6])
col=np.array([1,2,3,4,5,6,7])
value=np.array([1,2,1,8,1,3,5])

print('生成一个空的有向图')
G=nx.DiGraph()
print('为这个网络添加节点...')
for i in range(0,np.size(col)+1):
    G.add_node(i)
print('在网络中添加带权中的边...')
for i in range(np.size(row)):
    G.add_weighted_edges_from([(row[i],col[i],value[i])])
print('输出网络中的节点...')
print(G.nodes())
print('输出网络中的边...')
print(G.edges())
print('输出网络中边的数目...')
print(G.number_of_edges())
print('输出网络中节点的数目...')
print(G.number_of_nodes())
print('给网路设置布局...')
pos=nx.shell_layout(G)
print('画出网络图像：')
nx.draw(G,pos,with_labels=True, node_color='blue', edge_color='red', node_size=600, alpha=0.4 )
pylab.title('My NetWork',fontsize=15)
pylab.show()